“I’ll have an americano, thanks.” “I’m doing well, thanks.” We use thank you as a sign off on business emails and we whisper it to… — “I’ll have an americano, thanks.” “I’m doing well, thanks.” We use thank you as a sign off on business emails and we whisper it to ourselves when someone lets us merge onto the exit ramp. Thanking one another is built into much of our society’s expectations of daily exchanges. …